CN105626109B - It is a kind of that there is the method for repeating to apply prestressed cable bolting - Google Patents

It is a kind of that there is the method for repeating to apply prestressed cable bolting Download PDF

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Publication number
CN105626109B
CN105626109B CN201610022871.2A CN201610022871A CN105626109B CN 105626109 B CN105626109 B CN 105626109B CN 201610022871 A CN201610022871 A CN 201610022871A CN 105626109 B CN105626109 B CN 105626109B
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Prior art keywords
anchor
anchor cable
pipe
support bar
sleeve pipe
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CN105626109A (en
Inventor
施鑫镛
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SHANGDONG ZHONGLI HIGH PRESSURE VALVE Co.,Ltd.
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Quzhou Youde Industrial Design Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses the method for applying prestressed cable bolting with repetition, it is characterised in that:A T-shaped pressure pipe is additionally provided with anchor cable drilling outer end, supporting plate is pressed against on the wing plate of T-shaped pressure pipe, the anchored end anchor is set by drilling is inner in anchor cable body, sleeve is set on the anchor cable body at a certain distance from the anchored end anchor top, an annular space is formed between the sleeve pipe and anchor cable body, sleeve pipe is provided with flexible stop grouting plug close to one end of the anchored end anchor, after anchor cable installation, one end that the T-shaped pressure pipe is located in drilling is sealed against in described sleeve pipe, the anchored end anchor can provide enough anchor forces, carry out repeating to apply prestressing force to meet anchor cable.Mainly there is fabrication and installation anchor cable, first slip casting, secondary grouting, repetition to apply prestressing force step.Cable bolting method of the present invention can not disturb total length slip casting consolidated structure and with sufficient intensity anchored end repeatable application prestressing force.

Description

It is a kind of that there is the method for repeating to apply prestressed cable bolting
The present invention is the divisional application of patent of invention " one kind repeats to apply prestressed cable bolting method ", original application The applying date is on April 11st, 2014, and the application number of original application is 2014101444334, and the invention and created name of original application is " one Plant and repeat to apply prestressed cable bolting method ".
Technical field
The present invention relates to mine surrounding rock supporting field, more particularly to a kind of mine laneway repeats to apply prestressed anchor cable branch Maintaining method.
Background technology
Mine surrounding rock supporting is that field is extremely important, the essential aspect lacked for subterranean resource exploitation, in recent years coal Ore deposit exploits Frequent Accidents, and constantly, these accidents are that technical measures are not in place caused to the accident such as landslide, roof fall, are not adopted Effective technical measures or technical measures are taken effectively to perform, and pit mining surrounding rock supporting is enough, the country rock production such as landslide Raw accident can be avoided.It is bolting and rope support, grouting support, anchor rete cord joint to reinforce country rock Main Means in the prior art Supporting, hydraulic support stand, column supporting, reserved coal pillar or ore pillar, gob side entry retaining etc., Anchor cable-rod supporting are the general of this area All over supporting means, so those skilled in the art are constantly improving Anchor cable-rod supporting performance always, supporting effect is improved, is set Prestress anchorage cable suspension roof support is a major technique direction.
Current China's mine enters deep mining, and surrounding rock supporting is even more important in recovery process, but implement anchor pole, During cable bolting, for increase anchor pole, the supporting effect of anchor cable, one end slip casting of anchor pole rope is often fixed on country rock deep, then First slip casting anchoring anchor cable boom end, Ran Houchu are frequently necessary to when applying full-length prestress, but applying prestressing force in the prior art Secondary application prestressing force, is then again carried out total length slip casting, finally carries out outer end mounting plate and applies prestressing force, so can repeatedly disturb Surrounding rock supporting, and the injection slurry solidified can be made to produce loosening with anchor cable bar, destroy slip casting slurry consolidated structure, anchor note branch Protection structure effect is unsatisfactory.
The content of the invention
To solve the technical problem that prior art is present, total length slip casting solidification is not being disturbed it is an object of the present invention to provide one kind Structure and with sufficient intensity anchored end the prestressed anchor cable of repeatable application method for protecting support.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that:
One kind repeats to apply prestressed cable bolting method, and it comprises the following steps:
1)Fabrication and installation anchor cable:Prestressed anchor cable, which can be repeated to apply, includes anchor cable body, anchored end anchor, support Plate, lockset, the anchor cable body are located at drilling outer end and are sequentially provided with supporting plate and lockset, and a T-shaped pressure is additionally provided with drilling outer end Pipe, supporting plate is pressed against on the wing plate of T-shaped pressure pipe, the anchored end anchor is set by drilling is inner in anchor cable body, in institute State and sleeve is set on the anchor cable body at a certain distance from anchored end anchor top, one is formed between the sleeve pipe and anchor cable body Annular space, sleeve pipe is provided with flexible stop grouting plug close to one end of the anchored end anchor, is installed when anchor cable is finally at During into state, one end that the T-shaped pressure pipe is located in drilling is sealed against in described sleeve pipe;
2)Slip casting first anchors anchor end of anchorage cable:In above-mentioned steps 1)After fabrication and installation are good, anchored end anchor is driven It is in running order, slip casting anchoring is carried out to anchor cable body bottom portion by Grouting Pipe, the anchored end anchor coagulates with slurries Gu one, is that anchor cable improves enough anchor forces;
3)Secondary grouting:After waiting anchored end slurries fully to solidify, continue empty to the annular between sleeve pipe and the wall of a borehole Between carry out total length slip casting, carry out full length fastening;
4)Repeat to apply prestressing force:After above-mentioned steps implementation, filled in the outer end of anchor cable body by lockset and drawing Put in different supporting periods be repeated several times and apply prestressing force, the injecting cement paste applied will not be produced and destroy and disturb It is dynamic, prevent supporting from loosening or failing, effectively safeguard supporting construction body.
Step 1)In the anchored end anchor include the first fixed block, sliding shoe, the hook wing, first support bar, the One fixed block be fixed on the anchor cable body deeply drill in the inner, sliding shoe be slidably arranged in sleeve pipe and the first fixed block it Between the anchor cable body body of rod on, first support bar and the first fixed block, the hook wing and sliding shoe, first support bar and the hook wing are all carried out What can be relatively rotated is articulated and connected.
Step 1)In the anchored end anchor also include the second fixed block and second support bar, the second fixed block position Between the first fixed block and sliding shoe at the first fixed block, second support bar one end be hingedly connected to first support bar with On the pin joint of the hook wing, the other end is hingedly connected on the second fixed block.
Step 2)Described in driving anchored end anchor it is in running order including:Pushed up by applying to T-shaped pressure pipe Thrust and/or by drawing anchor cable body its lower end is contacted with sliding shoe, the driving hook wing and first support bar are opened, hook The crotch of the wing is " U "-shaped to hell direction, when the hook wing is in running order against the wall of a borehole, to the anchored end of anchor cable body Slip casting is carried out, after slurry solidification, the hook wing and first support bar will be firmly anchored at drilling inner end there is provided enough anchor forces.
Step 2)Described in driving anchored end anchor it is in running order including:Pushed up by applying to T-shaped pressure pipe Thrust and/or by drawing anchor cable body its lower end is contacted with sliding shoe, the driving hook wing, first support bar and second Strut opens, and the crotch of the hook wing is " U "-shaped to hell direction, when the hook wing is in running order against the wall of a borehole, to anchor cable The anchored end of body carries out slip casting, and after slurry solidification, the hook wing, first support bar and second support bar will be firmly anchored in drilling There is provided enough anchor forces for end.
The flexible stop grouting plug is flexible sealing rubber, and described sleeve pipe is pvc pipe or aluminum pipe.
The T-shaped pressure pipe is externally provided with flanging with sleeve pipe abutment end towards pipe, and the flanging is provided with the annular docked with sleeve pipe Sealing ring is provided with groove, groove, T-shaped pressure pipe is connected with bobbin seal.
A sealing gasket is additionally provided between shown T-shaped pressure pipe and drilling country rock wall so that grouting serous fluid will not largely ooze out drilling Outside, plugging action is played.
The beneficial effects of the invention are as follows:One is that by sleeve pipe anchor cable can be caused not noted when repeating to apply prestressing force to total length Starch reinforcing body and carry out disturbance destruction, so enable solidified slurry fully integral with the country rock bodily form, integrally undertake pressure from surrounding rock; One is that anchor end of anchorage cable uses the scalable hook wing, has both been facilitated during anchor cable deeply drills, while when carrying out resin or slip casting anchoring, Foot of hole is tightly anchored at, repeatedly applies prestressing force for anchor cable and enough anchor forces is provided, and anchor end structure letter It is single, contribute to anchor cable that deep drilling is installed, while anchor cable can be anchored fully.The sufficiently strong anchoring that anchored end anchor is provided Power is implemented repetition prestressing force with anchor cable and complemented each other, and without enough anchor forces, anchored end will be by heavy damage, it is difficult to effectively Form prestress anchorage cable.
Brief description of the drawings
Fig. 1:It is repeatable to apply prestress anchorage cable structural representation.
Fig. 2:T-shaped pressure pipe structural representation.
Fig. 3:Anchored end anchor improved structure schematic diagram.
Embodiment
Embodiment 1:With reference to shown in Fig. 1-2, anchor cable of the invention, which is that one kind is repeatable in the case of injecting cement paste is not disturbed, to be applied Plus the prestressing anchor support method needed, the anchor cable includes:Anchor cable body 1, anchored end anchor, sleeve pipe 6, T-shaped pressure Pipe 7, supporting plate 8, lockset 9, stop grouting plug 10, the anchored end anchor include the first fixed block 2, sliding shoe 3, the hook wing 5, first Support bar 4, the first fixed block 2 is fixed on the inner of anchor cable body 1 deeply in drilling, and sliding shoe 3 is slidably arranged in sleeve pipe 6 and the On the body of rod of anchor cable body 1 between one fixed block 2, sleeve pipe 6 is arranged at a certain distance from the upper end of sliding shoe 3, so that sliding shoe 3 exists Anchor cable deeply drill in when with enough sliding extension distances, be easy in anchor cable deeply drills.As shown in figure 1, the first support The fixed block 2 of bar 4 and first, the hook wing 5 and sliding shoe 3, first support bar 4 and the hook wing 5 all carry out relatively turnable be articulated and connected. Sleeve pipe 6 is provided with stop grouting plug 10 close to the one end of sliding shoe 3, prevents that in bored grouting in slurries sleeve pipe 6, pressure pipe 7 is pressed against The upper end of sleeve pipe 6, by applying jacking force to pressure pipe 7 or causing the lower end of sleeve pipe 6 and sliding shoe by primary drawing anchor cable body 1 3 contacts, the driving hook wing 5 and first support bar 4 are opened, and the crotch of the hook wing 5 is " U "-shaped to hell direction, when the hook wing 5 is against brill During hole wall, first slip casting is carried out to the anchored end of anchor cable body 1, after slurry solidification, the hook wing 5 and first support bar 4 are by firm anchor Gu in drilling inner end, there is provided enough anchor forces.
After the solidification enough of anchored end slurries is waited, continue to carry out total length slip casting to the annular space between sleeve pipe 6 and the wall of a borehole, Sleeve pipe 6, T-shaped pressure pipe 7 and drilling country rock are tightly anchored, due to T-shaped pressure pipe 7 in borehole port with the extension to outside hole, Can also be that sealing gasket 11 is added between wing plate and wall in the extension of T-shaped pressure pipe 7 according to needing, so that slip casting is starched Liquid will not be largely oozed out outside drilling, play plugging action, obtain more preferable slip casting effect.
After above-mentioned all slip castings terminate, repeatedly weighed by lockset 9 and draw-off gear in the outer end of anchor cable body 1 Apply prestressing force again, the injecting cement paste applied will not so be produced and destroy and disturb, effectively safeguard supporting construction body.
Stop grouting plug 10 uses flexible sealing block, for example with caulking gum, and such anchor cable is drawn when repeating to apply prestressing force Stretch deflection to be unlikely to destroy stop grouting plug 10, it allows anchor cable body 1 to carry out longitudinal stretching.
Sleeve pipe 6 can use pvc pipe, aluminum pipe or other lightweight tubing;T-shaped pressure pipe 7 is teeprofile, and pipe thickness is than set Pipe 6 is bigger, and T-shaped pressure pipe 7 and the contact jaw of sleeve pipe 6 can be towards setting flanging outside pipe, and flanging is provided with docked with sleeve pipe annular recessed Sealing ring is provided with groove, groove, T-shaped pressure pipe is connected with bobbin seal.Sealing gasket 11 is that have and T-shaped pressure pipe 7 in the middle of circle The through hole of the of substantially equal diameter of external diameter.
Embodiment 2:With reference to shown in Fig. 3, the anchored end anchor in embodiment 1 is further improved, other portions Divide same as Example 1.The anchored end anchor including the first fixed block 2, sliding shoe 3, the hook wing 5, first except supporting Bar 4, in addition to the second fixed block 13 and second support bar 12, the one end of second support bar 12 be hingedly connected to first support bar 4 with On the pin joint of the hook wing 5, the other end is hingedly connected on the second fixed block 13.Fixed by adding second support bar 12 and second Block 13 so that the hook wing 5 can have enough support forces to make the hook wing 5 against hole wall, meanwhile, when anchored end slip casting is anchored, the Two support bars 12, the second fixed block 13 also provide the stronger anchor force combined together with slurries.

Claims (2)

1. a kind of have the method for repeating to apply prestressed cable bolting, it comprises the following steps:
1)Fabrication and installation anchor cable:Prestressed anchor cable, which can be repeated to apply, includes anchor cable body (1), anchored end anchor, support Plate (8), lockset (9), the anchor cable body (1) are located at drilling outer end and set gradually the supporting plate and lockset, at drilling outer end A T-shaped pressure pipe (7) is additionally provided with, supporting plate is pressed against on the wing plate of T-shaped pressure pipe, the anchoring is set by drilling is inner in anchor cable body Anchor is held, sleeve (6), the sleeve pipe are set on the anchor cable body at a certain distance from the anchored end anchor top An annular space is formed between anchor cable body, sleeve pipe is provided with flexible stop grouting plug close to one end of the anchored end anchor (10), when anchor cable is finally at installation state, one end that the T-shaped pressure pipe is located in drilling is sealed against in the set Guan Shang;
2)Slip casting first anchors the anchor end of anchorage cable:In above-mentioned steps 1)After fabrication and installation are good, anchored end anchor is driven It is in running order, slip casting anchoring is carried out to anchor cable body bottom portion by Grouting Pipe, the anchored end anchor coagulates with slurries It is solidified as a whole, enough anchor forces is provided for anchor cable;
3)Secondary grouting:After waiting anchored end slurries fully to solidify, continue the annular space to sleeve pipe (6) between the wall of a borehole Total length slip casting is carried out, full length fastening is carried out;
4)Repeat to apply prestressing force:After above-mentioned steps implementation, lockset (9) and drawing are passed through in the outer end of anchor cable body (1) Device, which in different supporting periods can be repeated several times, applies prestressing force, its injecting cement paste that has applied will not be produced destruction and Disturbance, prevents supporting from loosening or failing, effectively safeguards supporting construction body;
Described step 1)In the anchored end anchor include the first fixed block, sliding shoe, the hook wing, first support bar, First fixed block be fixed on the anchor cable body deeply drill in the inner, sliding shoe is slidably arranged in sleeve pipe and the first fixed block Between the anchor cable body body of rod on, first support bar and the first fixed block, the hook wing and sliding shoe, first support bar and the hook wing all enter What row can be relatively rotated is articulated and connected;
Described step 1)In the anchored end anchor also include the second fixed block and second support bar, the second fixed block Between the first fixed block and sliding shoe at the first fixed block, second support bar one end is hingedly connected to first support bar With on the pin joint of the hook wing, the other end is hingedly connected on the second fixed block;
Described step 2)Described in driving anchored end anchor it is in running order including:By being applied to T-shaped pressure pipe (7) Plus jacking force and/or by drawing anchor cable body (1) sleeve pipe (6) lower end is contacted with sliding shoe (3), drive the hook wing (5), the One support bar (4) and second support bar (12) are opened, and the crotch of the hook wing (5) is " U "-shaped to hell direction, when the hook wing (5) is supported By the wall of a borehole it is in running order when, slip casting is carried out to the anchored end of anchor cable body (1), after slurry solidification, the hook wing (5), first Support bar (4) and second support bar (12) will be firmly anchored at drilling inner end, and there is provided enough anchor forces;
Described T-shaped pressure pipe is externally provided with flanging with sleeve pipe abutment end towards pipe, and the flanging is annular recessed provided with what is docked with sleeve pipe Sealing ring is provided with groove, groove, T-shaped pressure pipe is connected with bobbin seal.
2. a kind of method as claimed in claim 1 that there is repetition to apply prestressed cable bolting, it is characterised in that:It is described Flexible stop grouting plug is flexible sealing rubber, and described sleeve pipe is pvc pipe or aluminum pipe.
CN201610022871.2A 2014-04-11 2014-04-11 It is a kind of that there is the method for repeating to apply prestressed cable bolting Active CN105626109B (en)

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CN201410144433.4A CN103883339B (en) 2014-04-11 2014-04-11 A kind of cable bolting method repeating Shi Hanzhang

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CN106638625B (en) * 2016-11-02 2018-08-17 中国十七冶集团有限公司 After a kind of failure of prestressd anchor cable can tensioning again construction method
CN108756973B (en) * 2018-08-08 2023-09-08 中国矿业大学(北京) Split full-length anchoring flexible grouting anchor rod and grouting anchoring method
CN109235455A (en) * 2018-10-31 2019-01-18 中国三冶集团有限公司 A kind of double anchors expansion self-locking devices of soil anchor
CN114775659B (en) * 2022-05-27 2024-06-14 重庆交通大学 Creeping type flexible anchor cable, earthquake-resistant anchoring structure and slope earthquake-resistant reinforcing method

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CN2451634Y (en) * 2000-08-09 2001-10-03 合肥工业大学 Expansion anchor
WO2003042501A1 (en) * 2001-11-15 2003-05-22 Grinaker-Lta Limited Rock bolt
CN1162589C (en) * 2002-12-12 2004-08-18 上海交通大学 Ship anchor type anchor head of ground anchor in grouting stretch model
CN100453743C (en) * 2006-06-05 2009-01-21 吴德兴 Prestress anchor device
KR100919277B1 (en) * 2008-11-11 2009-09-30 박시우 Fixing means using the nail anchor and method thereof
CN101503962A (en) * 2009-03-06 2009-08-12 山东科技大学 Novel anchor rod with cap anchorage and total length radial anchorage
CN201539270U (en) * 2009-08-20 2010-08-04 陕西省公路勘察设计院 Novel prestressed supporting device
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CN103382847A (en) * 2013-07-26 2013-11-06 中国矿业大学 Prestressed drilling, anchoring and grouting anchor cable and supporting method

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CN105626109A (en) 2016-06-01
CN103883339A (en) 2014-06-25
CN103883339B (en) 2016-03-23
CN105507929B (en) 2017-09-01
CN105507929A (en) 2016-04-20

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Effective date of registration: 20201224

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Address before: Room 101, No.19, donggeng village, Xinxin street, Kecheng District, Quzhou green industry cluster district, Quzhou City, Zhejiang Province

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Denomination of invention: A method of anchor cable support with repeated application of pre-stress

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